CN102086813B - Systems and methods for heating intake air during cold HCCI operation - Google Patents
Systems and methods for heating intake air during cold HCCI operation Download PDFInfo
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- CN102086813B CN102086813B CN201010579111.4A CN201010579111A CN102086813B CN 102086813 B CN102086813 B CN 102086813B CN 201010579111 A CN201010579111 A CN 201010579111A CN 102086813 B CN102086813 B CN 102086813B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3035—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the premixed charge compression-ignition mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
- F02M31/07—Temperature-responsive control, e.g. using thermostatically-controlled valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/12—Engines characterised by fuel-air mixture compression with compression ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
- F02B17/005—Engines characterised by means for effecting stratification of charge in cylinders having direct injection in the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/021—Engine temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The present invention relates to systems and methods for heating intake air during cold HCCI operation. A system for controlling intake airflow of an engine includes a mode determination module, a throttle valve control module, and a valve actuation module. The mode determination module generates a mode signal based on an engine speed signal and an engine load signal. The mode signal indicates one of a spark ignition mode and a homogeneous charge compression ignition mode. The throttle valve control module generates a valve control signal based on the mode signal, a temperature signal, and a plurality of valve position signals that indicate positions of first and second throttle valves. The throttle valve control module controls the positions of the first and second throttle valves to regulate flow rates of intake air into an intake manifold of the engine via a heat exchanger based on the valve control signal. The valve actuation module actuates the first and second throttle valves based on the valve control signal.
Description
Technical field
The present invention relates to engine control system, relate more specifically to the engine control system of the motor for moving under spark ignition modes and homogeneous charge compression ignition mode.
Background technique
Here the background technique providing is described for introducing generally background of the present invention.In the degree described in this background technique part, in the inventor's of current signature works and this description, in the time of application, do not form the each side of prior art, be considered to prior art of the present invention neither express also non-tacit declaration.
For fuel efficiency and raising engine power, explosive motor (ICE) can be at spark ignition (SI) pattern and homogeneous charge compression ignition (HCCI) mode operation.Under SI pattern, air/fuel mixture can be by the spark ignitor in the cylinder of ICE.Under HCCI pattern, air/fuel mixture can be not by plug ignition in the situation that be lighted a fire by compressing.HCCI pattern is more effective than SI pattern, because HCCI pattern can make ICE move under poorer air/fuel mixture compared with SI pattern.
HCCI pattern produces aphlogistic energy release by air/fuel mixture being compressed to automatic ignition point under poor air/fuel mixture.Compared with SI pattern, HCCI pattern can provide the fuel economy of raising, and produces lower emission level.But, because directly do not burn releaser, so igniting process may face the challenge inherently aspect control.
For example, the burning during HCCI pattern can be controlled according to temperature.Temperature can be based on from ECT sensor engineer coolant temperature (ECT) signal.During the cold starting of ICE, HCCI pattern can be prohibited, until ECT signal is more than or equal to predetermined temperature.During cold starting, enable HCCI pattern and can cause unsettled and deteriorated automatic ignition.
During HCCI pattern, if before reaching predetermined temperature by compressing ignition air/fuel mixture, may there is noise, infringement to engine pack, misfire and/or engine stall.This has increased effulent, and has reduced the manoeuvring performance of ICE.Due to above reason, HCCI pattern can be delayed, until ICE is heated to predetermined temperature.
Summary of the invention
In one embodiment, provide a kind of system that comprises mode decision module, throttle control module and valve actuating module.Described mode decision module produces mode signal based on engine speed signal and engine load signal.In described mode signal pilot spark igniting (SI) pattern and homogeneous charge compression ignition (HCCI) pattern one.Multiple valve positions signal of the position of described throttle control module based on described mode signal, temperature signal and instruction first segment valve and second section valve produces valve control signal.The position of described throttle control module based on first segment valve described in the control of described valve control signal is to regulate the first flow rate that flows out and enter the air inlet of the intake manifold of described motor from described first segment valve.The position of described throttle control module based on second section valve described in the control of described valve control signal is to regulate by heat exchanger and to enter the second flow rate of the air inlet of described intake manifold.Described valve actuation module activates described first segment valve and described second section valve based on described valve control signal.
In further feature, provide a kind of method of inlet air stream of control engine.Described method comprises: produce mode signal based on engine speed signal and engine load signal.Described mode signal is via one in described mode signal instruction SI pattern and HCCI pattern.Multiple valve positions signal of the position based on described mode signal, temperature signal and instruction first segment valve and second section valve produces valve control signal.Based on the position of first segment valve described in the control of described valve control signal, to regulate the first flow rate that flows out and enter the air inlet of the intake manifold of described motor from described first segment valve.Based on the position of second section valve described in the control of described valve control signal, to regulate by heat exchanger and to enter the second flow rate of the air inlet of described intake manifold.Activate described first segment valve and described second section valve based on described valve control signal.
The further Applicable scope of the present invention will become apparent by detailed description provided below.Should be understood that, this detailed description and concrete example be only for purpose of illustration, and be not intended to limit the scope of the invention.
The present invention also provides following scheme:
Scheme 1, a kind of system for motor, it comprises:
Mode decision module, described mode decision module produces mode signal based on engine speed signal and engine load signal,
Wherein, in described mode signal pilot spark igniting (SI) pattern and homogeneous charge compression ignition (HCCI) pattern;
Throttle control module, multiple valve positions signal of the position of described throttle control module based on described mode signal, temperature signal and instruction first segment valve and second section valve produces valve control signal,
Wherein, the position of described throttle control module based on first segment valve described in the control of described valve control signal, to regulate the first flow rate that flows out and enter the air inlet of the intake manifold of described motor from described first segment valve, and the position of described throttle control module based on second section valve described in the control of described valve control signal, to regulate by heat exchanger and to enter the second flow rate of the air inlet of described intake manifold; And
Valve actuation module, described valve actuation module activates described first segment valve and described second section valve based on described valve control signal.
Scheme 2, system as described in scheme 1, is characterized in that, it also comprises:
Engine speed sensor, described engine speed sensor produces described engine speed signal; And
Mass Air Flow sensor, described Mass Air Flow sensor produces described engine load signal.
Scheme 3, system as described in scheme 1, is characterized in that, described temperature signal produces based at least one in engineer coolant temperature signal, intake air temperature signals, chamber temperature signal and motor oil temperature signal.
Scheme 4, system as described in scheme 1, is characterized in that, it also comprises:
First segment valve position sensor, described first segment valve position sensor detects the position of described first segment valve and produces the first valve position signal; And
Second section valve position sensor, described second section valve position sensor detects the position of described second section valve and produces duaspiracle position signal,
Wherein, described multiple valve positions signal comprises described the first valve position signal and described duaspiracle position signal.
Scheme 5, system as described in scheme 1, is characterized in that, described heat exchanger passes to the heat of the exhaust from described motor the described air inlet of the described heat exchanger of flowing through.
Scheme 6, system as described in scheme 1, it is characterized in that, in the time that described temperature signal is less than predetermined temperature, described throttle control module via described valve actuation module and described first segment valve by the described inlet guide flowing out from described first segment valve to described intake manifold, and
Wherein, in the time that described temperature signal is less than described predetermined temperature, described throttle control module via described valve actuation module and described second section valve by the described inlet guide from described heat exchanger in described intake manifold.
Scheme 7, system as described in scheme 6, is characterized in that, it also comprises that pattern enables module, and described pattern is enabled module and enabled described HCCI pattern based on described mode signal and described temperature signal.
Scheme 8, system as described in scheme 6, is characterized in that, in the time that described mode signal is indicated described HCCI pattern, described valve actuation module by described first segment valve and described second section valve adjustments to corresponding precalculated position.
Scheme 9, system as described in scheme 6, is characterized in that, described valve actuation module produces for activating the first actuated signal of described first segment valve and for activating the second actuated signal of described second section valve based on described multiple valve positions signal.
Scheme 10, system as described in scheme 6, is characterized in that, described valve actuation module regulates described first segment valve so that described the first flow rate is made as to the first predetermined value, and regulates described second section valve so that described the second flow rate is made as to the second predetermined value.
The method of the inlet stream of scheme 11, a kind of control engine, it comprises:
Produce mode signal based on engine speed signal and engine load signal;
By one in described mode signal pilot spark igniting (SI) pattern and homogeneous charge compression ignition (HCCI) pattern;
Multiple valve positions signal of the position based on described mode signal, temperature signal and instruction first segment valve and second section valve produces valve control signal;
Based on the position of first segment valve described in the control of described valve control signal, to regulate the first flow rate that flows out and enter the air inlet of the intake manifold of described motor from described first segment valve, and position based on second section valve described in the control of described valve control signal, to regulate by heat exchanger and to enter the second flow rate of the air inlet of described intake manifold; And
Activate described first segment valve and described second section valve based on described valve control signal.
Scheme 12, method as described in scheme 1, is characterized in that, it also comprises:
Produce described engine speed signal via engine speed sensor; And
Produce described engine load signal via Mass Air Flow sensor.
Scheme 13, method as described in scheme 11, is characterized in that, it also comprises: produce described temperature signal based at least one in engineer coolant temperature signal, intake air temperature signals, chamber temperature signal and motor oil temperature signal.
Scheme 14, method as described in scheme 11, is characterized in that, it also comprises:
Detect the position of described first segment valve via first segment valve position sensor;
Position based on described first segment valve produces the first valve position signal;
Detect the position of described second section valve via second section valve position sensor;
Position based on described second section valve produces duaspiracle position signal; And
Comprise that described the first valve position signal and described duaspiracle position signal are as described multiple valve positions signal.
Scheme 15, method as described in scheme 11, is characterized in that, it also comprises: the heat of the exhaust from described motor is passed to the described air inlet of the described heat exchanger of flowing through.
Scheme 16, method as described in scheme 11, is characterized in that, it also comprises: regulate described first segment valve and described second section valve to maintain predetermined temperature, described the first flow rate and described the second flow rate.
Scheme 17, method as described in scheme 16, is characterized in that, it also comprises: enable described HCCI pattern based on described mode signal and described temperature signal.
Scheme 18, method as described in scheme 16, is characterized in that, it also comprises: in the time that described mode signal is indicated described HCCI pattern, by described first segment valve and described second section valve adjustments to corresponding precalculated position.
Scheme 19, method as described in scheme 16, is characterized in that, it also comprises: produce for activating the first actuated signal of described first segment valve and for activating the second actuated signal of described second section valve based on described multiple valve positions signal.
Scheme 20, method as described in scheme 16, is characterized in that, it also comprises:
Regulate described first segment valve so that described the first flow rate is made as to the first predetermined value; And
Regulate described second section valve so that described the second flow rate is made as to the second predetermined value.
Brief description of the drawings
Will comprehend the present invention by the detailed description and the accompanying drawings, in accompanying drawing:
Fig. 1 is according to the functional block diagram of the exemplary engine control system of the embodiment of the present invention;
Fig. 2 is according to the functional block diagram of the DIS Dual Induction System of the embodiment of the present invention; And
Fig. 3 illustrates according to the method for the inlet air stream of the control engine of the embodiment of the present invention.
Embodiment
Description is below only exemplary in essence and will limits anything but invention, its application, or uses.For the sake of clarity, the identical similar element of designated will be used in the accompanying drawings.As used herein, at least one in phrase A, B and C should be interpreted as using the logic (A or B or C) of non-exclusive logic OR.Should be understood that, in the situation that not changing principle of the present invention, can be with the step in different order manners of execution.
As used herein, term module refers to processor (shared, special or in groups) and storage, the combinational logic circuit of specific integrated circuit (ASIC), electronic circuit, the one or more software programs of execution or firmware program and/or other applicable assembly of institute's representation function is provided.
Can under SI pattern and HCCI pattern, operate ICE according to engine control system of the present invention.HCCI pattern can reduce fuel consumption, because HCCI pattern can cause igniting by compression under poorer air/fuel mixture compared with under SI pattern.The condition of enabling HCCI pattern can meet according to the relation between engine speed signal and engine load signal.Only for example, in the time that engine speed signal is in the first prespecified range, can meet first condition.As another example, in the time that engine load signal is in the second prespecified range, can meet second condition.In the time forbidding HCCI pattern, engine control system can operate ICE under SI pattern.
ICE can be direct injection spark ignition engine, and can optionally under hierarchical operations pattern, move.In order to move under hierarchical operations pattern, fuel injector is before ignition event and while approaching ignition event in time, inject fuel into the selection area of firing chamber.The remaining area of firing chamber can be filled with the air/fuel mixture poorer than the air/fuel mixture in selection area.This provides stoichiometry charge near spark plug, makes air/fuel mixture easily light and burn rapidly and reposefully.Hierarchical operations pattern can provide poorer air/fuel mixture compared with homogeneous operator scheme.Therefore, hierarchical operations pattern can make emissions from engines and fuel consumption minimization of loss.
Embodiments of the invention provide the technology for controlling intake temperature and air rate during the cold starting at motor and/or warm-up events.Described technology can reduce pumping loss, and poor air/fuel mixture can be provided during HCCI pattern.Poor air/fuel mixture can be by regulating inlet air flow rate and fuel adding rate to provide.Inlet air flow rate and fuel adding rate can be controlled by for example engine air throttle control valve and fuel injection system.
Described technology can also reduce with cold starting event at motor during enable the amount of time that HCCI pattern is associated.Compared with not using the air inlet of heating, use the air inlet of heating can make from SI pattern faster to the transformation of HCCI pattern.Enable HCCI pattern more early, and the fuel efficiency of motor is better.
In Fig. 1, the exemplary engine control system 100 of vehicle is shown.Engine control system 100 can comprise motor 102, DIS Dual Induction System 104 and releasing system 105.DIS Dual Induction System 104 can operate under HCCI pattern motor 102 by pre-heating intaking before receiving at the launched machine 102 of air inlet in the cold starting event at motor 102 early.The air inlet path that uses heating, heat energy passes to air inlet from the releasing system 105 of motor 102.The example in the air inlet path of heating is described in Fig. 2.
DIS Dual Induction System 104 comprises with the engine control module of air inlet control module 108 (ECM) 106, heat exchanger 110, first segment valve (cold closure) 112 and second section valve (thermal center valve) 114.Air inlet control module 108 is controlled inlet air stream according to engine temperature, engine load and engine speed by activating closure 112,114.Engine temperature can mean engine oil temperature, engineer coolant temperature, intake temperature and/or chamber temperature.
First segment valve 112 can be equipped with throttle position sensor (TPS) 116.TPS 116 can generate the first valve position signal VP1 of first segment valve 112.Second section valve 114 also can be equipped with discrete TPS 118.TPS 118 can generate the duaspiracle position signal VP2 of second section valve 114.Air inlet control module 108 can be with the one or more positions of monitoring closure 112,114 in TPS 116,118.Air inlet can be inhaled in motor 102, is beneficial to the engine operational conditions of enabling HCCI pattern during the cold starting of motor 102 and/or warm-up events to provide.Engine operational conditions for example can refer to, in the time that engine temperature is more than or equal to predetermined temperature (, 90-95 DEG C).
DIS Dual Induction System 104 can comprise Mass Air Flow (MAF) sensor 122, intake temperature (IAT) sensor 126 and manifold absolute pressure (MAP) sensor 128.At motor run duration, air filter 120 is passed in air inlet, and via maf sensor 122.Maf sensor 122 produces instruction by the MAF signal AirFlow of the air rate of maf sensor 122.Based on the position of closure 112,114, air inlet is inhaled in intake manifold 124.
IAT sensor 126 can detect the temperature that is inhaled into the air inlet in intake manifold 124.IAT sensor 126 can produce IAT signal AirTemp.IAT sensor 126 can be positioned in intake manifold 124, and produces IAT signal AirTemp based on intake temperature.MAP sensor 128 can detect the air pressure in intake manifold 124, and produces MAP signal MfdPres.MAP sensor 128 can be positioned in intake manifold 124.Air pressure in MAP signal MfdPres instruction intake manifold 124.
Air inlet from intake manifold 124 is inhaled in the cylinder of motor 102 by intake valve 132.Although motor 102 is shown and has single representative cylinder 130, and motor 102 can comprise any amount of cylinder.ECM 106 can control the amount of the fuel spraying by fuel injection system 134.Fuel injection system 134 can inject fuel in intake manifold 124 at center position, or can inject fuel in intake manifold 124 by for example intake valve 132 of each cylinder of close motor 102 in multiple positions.Alternatively, fuel injection system 134 can inject fuel directly in the cylinder of motor 102.The fuel spraying mixes with received air, and produces air/fuel mixture in cylinder 130.
ECM 106 can comprise engine speed sensor 140, spark control module 136 and lift control module 148.Engine speed sensor 140 can produce the engine speed signal RPM of the speed of instruction motor 102.This speed can refer to the rotational speed in rpm (RPM) of bent axle.By air/fuel mixture, the burning in cylinder 130 produces this rotational speed.Piston (not shown) compressed air/fuel mixture in cylinder 130.Spark control module 136 can encourage the spark plug 138 in cylinder 130, to light air/fuel mixture.The timing of igniting can be based on piston the moment when its uppermost position, the uppermost position of described piston is called as top dead center (TDC).
Piston is by exhaust valve 142 combustion gas.Exhaust valve 142 can be controlled by exhaust cam shaft 144, and intake valve 132 can be controlled by admission cam shaft 146.In various embodiments, multiple admission cam shafts can be controlled multiple intake valves of each cylinder and/or can control the intake valve of many group cylinders.Similarly, multiple exhaust cam shafts can be controlled multiple exhaust valves of each cylinder and/or can control the exhaust valves of organizing cylinders more.Lift control module 148 can instruction intake valve 132 and exhaust valve 142 between high lift state and low lift state, switch.For example, lift control module 148 can make intake valve 132 and/or exhaust valve 142 for example, change between two discrete valve state (, low lift state and high lift state).
Waste gas is discharged from motor 102 via gas exhaust manifold 150.Gas exhaust manifold 150 can comprise catalytic converter 152, to remove particulate matter from waste gas.Gas exhaust manifold 150 can provide thermal source for heat exchanger 110.For example, heat exchanger 110 can be positioned at gas exhaust manifold 150 tops, makes can pass to heat exchanger 110 from the heat of gas exhaust manifold 150.
DIS Dual Induction System 104 can also comprise engineer coolant temperature (ECT) sensor 154, to detect engine temperature.ECT signal EngCTemp can be produced by ECT sensor 154.ECT sensor 154 can be positioned in motor 102 or is positioned at other position that freezing mixture is recycled, for example, be positioned at radiator (not shown) place.
In Fig. 2, the exemplary DIS Dual Induction System 104 of engine control system 100 is shown.DIS Dual Induction System 104 can comprise air inlet control module 108, heat exchanger 110, first segment valve 112 and second section valve 114.Air inlet control module 108 can comprise that mode decision module 200, throttle control module 202, valve actuation module 204 and pattern enable module 206.
Mode decision module 200 can receive signal from sensor 208.Sensor 208 can comprise maf sensor 122, IAT sensor 126, engine speed sensor 140, ECT sensor 154, engine oil temperature sensor 210 and chamber temperature sensor 212.Engine oil temperature sensor 210 can produce the motor oil temperature signal OilTemp of the temperature of instruction engine oil.Chamber temperature sensor 212 can produce the chamber temperature signal CCTemp of the temperature of instruction firing chamber.
Mode decision module 200 receives from the engine speed signal RPM of engine speed sensor 140 with from the MAF signal AirFlow of maf sensor 122.The mode signal that mode decision module 200 one of produces in instruction SI pattern and HCCI pattern based on engine speed signal RPM and engine load signal LOAD.Engine load signal LOAD can produce based on MAF signal AirFlow.
Throttle control module 202 receiving mode signals, and produce valve control signal based on mode signal, temperature signal, the first valve position signal VP 1 and duaspiracle position signal VP2.Temperature signal can be determined based at least one in engineer coolant temperature signal EngCTemp, intake air temperature signals AirTemp, motor oil temperature signal OilTemp and chamber temperature signal CCTemp.In addition, temperature signal can carry out modeling based on other engine parameter for example engine load, Engine torque and engine speed.
Valve actuation module 204 activates closure 112,114 based on valve control signal.The position of closure 112,114 is adjusted to be provided for enabling the intake temperature of HCCI pattern.For example, can close first segment valve 112, pass through the first air duct 214 with forced air induction.Air inlet can be heated by heat exchanger 110.Can open second section valve 114, with via the second air duct 216 by inlet guide in intake manifold 124.Can regulate first segment valve 112 and second section valve 114 to make the temperature of the air inlet that enters intake manifold 124 be made as the predetermined temperature for enabling HCCI pattern.
Pattern is enabled module 206 receiving mode signal and temperature signals, and enables HCCI pattern based on mode signal and temperature signal.For example,, in the time of mode signal instruction HCCI pattern and in the time that temperature signal is more than or equal to predetermined temperature, motor 102 can move under HCCI pattern.
In Fig. 3, illustrate that the inlet stream of control engine is to enable the method for HCCI pattern.Although mainly described following steps with reference to the embodiment of Fig. 1-2, can revise these steps, to be applied to other embodiments of the invention.The control of the air inlet control module 108 of for example Fig. 1 of control module can be carried out following steps.
The method can start in step 300.In step 302, pattern is enabled module 206 can enable SI pattern at first, and SI pattern can be the default mode of motor 102.In step 304, valve actuation module 204 can regulate first segment valve 112 to the position of partly opening at first, and regulates second section valve 114 to the position of partly closing.This makes air inlet be inhaled in intake manifold 124 by the first air inlet path 215 and the second air inlet path 217, thereby provides predetermined temperature and air rate for enabling of HCCI pattern.
In step 306, mode decision module 200 receives from the engine speed signal RPM of engine speed sensor 140 with from the MAF signal AirFlow of maf sensor 122.Engine load signal LOAD can produce based on MAF signal AirFlow.
In step 308, in the time that engine speed signal RPM is in the first prespecified range, control can advance to step 310, can turn back to step 306 otherwise control.In step 310, in the time that engine load signal LOAD is in the second prespecified range, control can advance to step 312, can turn back to step 306 otherwise control.Mode decision module 200 judges based on engine speed signal RPM and engine load signal LOAD whether motor 102 can enable HCCI pattern.
In step 312, the mode signal that mode decision module 200 one of produces in instruction SI pattern and HCCI pattern based on engine speed signal RPM and engine load signal LOAD.In the time of mode signal instruction HCCI pattern and in the time that engine temperature is greater than predetermined temperature, enable HCCI pattern.In other words,, although mode signal instruction HCCI pattern, enabling of HCCI pattern is delayed, until the temperature signal of motor 102 is more than or equal to predetermined temperature.Therefore, motor 102 can move under SI pattern, until enable HCCI pattern based on temperature signal.
In step 314, throttle control module 202 can receive temperature signal.Temperature signal can be determined based at least one in engineer coolant temperature signal EngCTemp, intake air temperature signals AirTemp, motor oil temperature signal OilTemp and chamber temperature signal CCTemp.Only for example, temperature signal TEMP can be defined as provided in representation 1.
TEMP=F{EngCTemp, AirTemp, OilTemp, CCTemp} (1) EngCTemp is engineer coolant temperature.AirTemp is intake temperature.OilTemp is motor oil temperature.CCTemp is chamber temperature.
In step 316, in the time that temperature signal is less than predetermined temperature, control can advance to step 318, can advance to step 324 otherwise control.For example, if temperature signal is more than or equal to predetermined temperature and mode signal instruction HCCI pattern, can in the situation that not postponing, enable HCCI pattern for motor 102.In the time that temperature signal is less than predetermined temperature, enabling of HCCI pattern can be delayed.
In step 318, throttle control module 202 receives the first valve position signal VP1 and duaspiracle position signal VP2.Valve position signal VP1, VP2 can receive from the TPS 116,118 of closure 112,114 respectively.Valve position signal VP1, VP2 are corresponding to the position of closure 112,114.
In step 320, throttle control module 202 can produce valve control signal based on mode signal, temperature signal and throttle position signal.Throttle control module 202 is controlled the amount that is inhaled into the amount of the air inlet in intake manifold 124 and is directed into the air inlet of heat exchanger 110.
For example, based on the position of first segment valve 112 and second section valve 114, part or all of air inlet can be conducted through heat exchanger 110.Air inlet can be directed into intake manifold 124 by air inlet path 215,217.Throttle control module 202 can regulate by controlling the position of first segment valve 112 and second section valve 114 the second flow rate of the air in the first flow rate and the second air inlet path 217 of the air in the first air inlet path 215.
The position of first segment valve 112 and second section valve 114 can be set by the function based on engine coolant and intake temperature.Only for example, valve control signal Vctrl can be defined as provided in representation 2.
Vctrl＝F{ECT，IAT}(2)
ECT is engineer coolant temperature.IAT is intake temperature.Although in engineer coolant temperature and intake temperature shown in representation 2, valve control signal Vctrl can be for example function of the gentle chamber temperature of engine oil of other engine temperature.
In step 322, valve actuation module 204 receives valve control signal, and produces the first actuated signal and the second actuated signal based on valve control signal.The first actuated signal can be for activating first segment valve 112.The second actuated signal can be for activating second section valve 114.Only for example, first segment valve 112 can be arranged on the position of closing completely, and second section valve 114 can be arranged on the position of opening completely.This makes air sequentially flow through the first air duct 214, heat exchanger 110, the second air duct 216 and second section valve 114.Air inlet is inhaled in intake manifold 124 via air inlet path 215,217.
In addition, valve position signal VP1, the VP2 that closure 112,114 can be based on from TPS 116,118 and opening and closing.Closure 112,114 can partly and/or little by little open and close, thereby provides temperature predetermined or that set with mixed heat air and cool air.Throttle control module 202 receives valve position signal VP1, VP2, and produces valve control signal based on valve position signal VP1, VP2.Valve actuation module 204 receives valve control signal, and changes the valve position of closure 112,114 based on valve control signal.
In step 324, pattern is enabled the inactive SI pattern of module 206, so that motor 102 operates under HCCI pattern.In step 326, pattern is enabled module 206 and is enabled HCCI pattern based on mode signal and temperature signal.In the time that mode signal indicates HCCI pattern and temperature signal to be more than or equal to predetermined temperature, can enable HCCI pattern.
In step 328, valve actuation module 204 can regulate first segment valve 112 and second section valve 114, air inlet is maintained to predetermined temperature and the air rate of the HCCI pattern for being enabled.Air inlet can be inhaled in intake manifold 124 via air inlet path 215,217.Control can finish in step 330.
Above step is exemplary example; These steps can be according to application order ground, synchronously, side by side, continuously, during overlapping time section or carry out with different order.
Broad teachings of the present invention can be implemented with various forms.Therefore, although the present invention includes concrete example, true scope of the present invention should not be limited to this, because other amendment will become apparent to those skilled in the art on the basis of research accompanying drawing, specification and appended claims.
Claims (14)
1. for a system for motor, it comprises:
Mode decision module, described mode decision module produces mode signal based on engine speed signal and engine load signal,
Wherein, in described mode signal pilot spark ignition mode and homogeneous charge compression ignition mode;
Throttle control module, described throttle control module receive temperature signal and in the time that described temperature signal is less than predetermined temperature multiple valve positions signal of the position based on described mode signal, described temperature signal and instruction first segment valve and second section valve produce valve control signal, wherein said temperature signal produces based at least one in engineer coolant temperature signal and motor oil temperature signal;
Wherein, the position of described throttle control module based on first segment valve described in the control of described valve control signal, to regulate the first flow rate that flows out and enter the air inlet of the intake manifold of described motor from described first segment valve, and the position of described throttle control module based on second section valve described in the control of described valve control signal, to regulate by heat exchanger and to enter the second flow rate of the air inlet of described intake manifold;
Pattern is enabled module, and described pattern is enabled module and based on described mode signal and described temperature signal, described spark ignition modes is converted to described homogeneous charge compression ignition mode in the time that described temperature signal is not less than described predetermined temperature; And
Valve actuation module, described valve actuation module in the time that described temperature signal is less than predetermined temperature, activate described first segment valve and described second section valve based on described valve control signal and in the time enabling described homogeneous charge compression ignition mode by described first segment valve and described second section valve adjustments to corresponding precalculated position.
2. the system as claimed in claim 1, is characterized in that, it also comprises:
Engine speed sensor, described engine speed sensor produces described engine speed signal; And
Mass Air Flow sensor, described Mass Air Flow sensor produces described engine load signal.
3. the system as claimed in claim 1, is characterized in that, it also comprises:
First segment valve position sensor, described first segment valve position sensor detects the position of described first segment valve and produces the first valve position signal; And
Second section valve position sensor, described second section valve position sensor detects the position of described second section valve and produces duaspiracle position signal,
Wherein, described multiple valve positions signal comprises described the first valve position signal and described duaspiracle position signal.
4. the system as claimed in claim 1, is characterized in that, described heat exchanger passes to the heat of the exhaust from described motor the described air inlet of the described heat exchanger of flowing through.
5. the system as claimed in claim 1, it is characterized in that, in the time that described temperature signal is less than predetermined temperature, described throttle control module via described valve actuation module and described first segment valve by the described inlet guide flowing out from described first segment valve to described intake manifold, and
Wherein, in the time that described temperature signal is less than described predetermined temperature, described throttle control module via described valve actuation module and described second section valve also by the described inlet guide from described heat exchanger in described intake manifold.
6. system as claimed in claim 5, is characterized in that, described valve actuation module produces for activating the first actuated signal of described first segment valve and for activating the second actuated signal of described second section valve based on described multiple valve positions signal.
7. system as claimed in claim 5, is characterized in that, described valve actuation module regulates described first segment valve so that described the first flow rate is made as to the first predetermined value, and regulates described second section valve so that described the second flow rate is made as to the second predetermined value.
8. a method for the inlet stream of control engine, it comprises:
Produce mode signal based on engine speed signal and engine load signal;
Produce temperature signal based at least one in engineer coolant temperature signal and motor oil temperature signal;
By one in described mode signal pilot spark ignition mode and homogeneous charge compression ignition mode;
Multiple valve positions signal of the position based on described mode signal, described temperature signal and instruction first segment valve and second section valve in the time that described temperature signal is less than predetermined temperature produces valve control signal;
Based on the position of first segment valve described in the control of described valve control signal, to regulate the first flow rate that flows out and enter the air inlet of the intake manifold of described motor from described first segment valve, and position based on second section valve described in the control of described valve control signal, to regulate by heat exchanger and to enter the second flow rate of the air inlet of described intake manifold;
In the time that being not less than described predetermined temperature, described temperature signal, based on described mode signal and described temperature signal, described spark ignition modes is converted to described homogeneous charge compression ignition mode; And
In the time that described temperature signal is less than predetermined temperature, activate described first segment valve and described second section valve based on described valve control signal and in the time enabling described homogeneous charge compression ignition mode by described first segment valve and described second section valve adjustments to corresponding precalculated position.
9. method as claimed in claim 8, is characterized in that, it also comprises:
Produce described engine speed signal via engine speed sensor; And
Produce described engine load signal via Mass Air Flow sensor.
10. method as claimed in claim 8, is characterized in that, it also comprises:
Detect the position of described first segment valve via first segment valve position sensor;
Position based on described first segment valve produces the first valve position signal;
Detect the position of described second section valve via second section valve position sensor;
Position based on described second section valve produces duaspiracle position signal; And
Comprise that described the first valve position signal and described duaspiracle position signal are as described multiple valve positions signal.
11. methods as claimed in claim 8, is characterized in that, it also comprises: the heat of the exhaust from described motor is passed to the described air inlet of the described heat exchanger of flowing through.
12. methods as claimed in claim 8, is characterized in that, it also comprises: regulate described first segment valve and described second section valve to maintain predetermined temperature, described the first flow rate and described the second flow rate.
13. methods as claimed in claim 12, is characterized in that, it also comprises: produce for activating the first actuated signal of described first segment valve and for activating the second actuated signal of described second section valve based on described multiple valve positions signal.
14. methods as claimed in claim 12, is characterized in that, it also comprises:
Regulate described first segment valve so that described the first flow rate is made as to the first predetermined value; And
Regulate described second section valve so that described the second flow rate is made as to the second predetermined value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/629,966 US8539932B2 (en) | 2009-12-03 | 2009-12-03 | Systems and methods for heating intake air during cold HCCI operation |
| US12/629966 | 2009-12-03 |
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| Publication Number | Publication Date |
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| CN102086813A CN102086813A (en) | 2011-06-08 |
| CN102086813B true CN102086813B (en) | 2014-08-06 |
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| CN201010579111.4A Expired - Fee Related CN102086813B (en) | 2009-12-03 | 2010-12-03 | Systems and methods for heating intake air during cold HCCI operation |
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| Country | Link |
|---|---|
| US (1) | US8539932B2 (en) |
| CN (1) | CN102086813B (en) |
| DE (1) | DE102010052853B4 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359411B (en) * | 2011-08-25 | 2013-03-27 | 天津大学 | Air intake and exhaust thermal control device and method for implementing HCCI (homogeneous charge compression ignition) combustion of gasoline engine |
| CZ303579B6 (en) * | 2011-10-24 | 2012-12-19 | Ceské vysoké ucení technické v Praze, Fakulta strojní, Výzkumné centrum spalovacích motoru automobilu Josefa Božka | Method of increasing efficiency of high-pressure portion of spark ignition engine circuit, especially during partial load and apparatus for making the same |
| FR2984962B1 (en) * | 2011-12-21 | 2013-11-29 | Valeo Sys Controle Moteur Sas | SECURED TWO-WAY DOSING DEVICE FOR MOTOR VEHICLE |
| JP5915472B2 (en) * | 2012-09-07 | 2016-05-11 | マツダ株式会社 | Spark ignition direct injection engine |
| CN103850816B (en) * | 2012-12-04 | 2017-07-25 | 上海汽车集团股份有限公司 | Combustion mode switching system and method for homogeneity compression-ignition engine |
| CN103925061A (en) * | 2013-01-11 | 2014-07-16 | 俞志毅 | Heat-absorption and energy-saving method of engine cooling system and device implementing method |
| CN108343515A (en) * | 2018-03-14 | 2018-07-31 | 李涛 | Temperature control throttle valve device |
| CN109184921A (en) * | 2018-08-20 | 2019-01-11 | 李涛 | Temperature control throttle valve device |
| JP6737918B2 (en) * | 2018-03-14 | 2020-08-12 | タオ・リィＴａｏ ＬＩ | Temperature control throttle device |
| JP7044052B2 (en) * | 2018-12-26 | 2022-03-30 | マツダ株式会社 | Engine intake temperature controller |
| CN117418974B (en) * | 2023-12-18 | 2024-04-16 | 潍柴动力股份有限公司 | Engine air inlet device, throttle valve control method and related equipment |
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| JP3690078B2 (en) * | 1997-08-27 | 2005-08-31 | 日産自動車株式会社 | Spark ignition engine |
| US20050183693A1 (en) * | 2004-02-25 | 2005-08-25 | Ford Global Technologies Llc | Method and apparatus for controlling operation of dual mode hcci engines |
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Also Published As
| Publication number | Publication date |
|---|---|
| US8539932B2 (en) | 2013-09-24 |
| CN102086813A (en) | 2011-06-08 |
| DE102010052853B4 (en) | 2019-07-11 |
| US20110132317A1 (en) | 2011-06-09 |
| DE102010052853A1 (en) | 2011-08-25 |
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